Add ground beef and cook until brown about 10 minutes.
Add all the spices and let it cook for another 12 minutes so that spices mix well with the ground beef.
Add the kidney beans, cover and let it simmer for 15 min on low heat.
For the topping, in a roasting pan/tray, place parchment paper and arrange the onions, peppers and cabbage. Drizzle with olive oil. Place in the oven at 400 Degrees F for 30-45 minutes ( make sure to check the doneness you desire, don't overcook).
Shred the lettuce and slice the radish as toppings for tacos.
To assemble the tacos, start with the ground meat. Then top with the roasted vegetables and finish with the crunchy toppings.